Shadows of the Ancestors

Shadowheaven

A city once a great spectical of the old empire, now been reduced to rubble and ruin. The Cities walls house a great number of monsters from many different backgrounds. These creatures have somehow been organised by a powerful being that keeps himself from view in the city’s lasting castle.
Though the city has been in ruins for many centuries, it is a formidable fortress with high battlements and multiple defensive rings. Mages have failed to penetrate the walls with spells and trances to see what lies on the otherside, with the conclusion that some force prevents them and only those on the inside of its walls can use magic against whatever resides within.